Axle-box



(No Model.)

B. T. HENRY.

AXLE BOX.

No. 405,737. Patented June 25, 1889.

N. PETERS, Fhdlo-Lilbographu. Waghinglon. D. Q

UNITED STATES PATENT OFFICE.

BENJAMIN TYLER HENRY, OF NEIV HAVEN, CONNECTICUT.

AXLE-BOX.

SPECIFICATION forming part of Letters Patent No. 405,737, dated June 25,1889.

Application filed February 6, 1889. Serial No. 298,793. (No model.)

To aZZ whom it may concern:

Be it known that I, BENJAMIN TYLER HENRY, residing at New Haven, in thecounty of New Haven and State of Connecticut, have invented certain newand useful Improvements in Axle-Boxes; and I do declare the following tobe a full, clear, and exact description of the same, reference being hadto the accompanying drawings, which form a part of this specification.

My invention relates to an improvement in that class of axle-boxes whichare provided with extension attachments, the object of the presentinvention being to adapt them to resist turning in their hubs when theirextension attachments are adjusted.

With these ends in view my invention consists in certain details ofconstruction and combinations of parts, as will be hereinafterdescribed, and pointed out in the claim.

In the accompanying drawings, Figure 1 is a View, partly in sideelevation and partly in central longitudinal section, of an axle-boxembodying my invention; and Fig. 2 is aview of the box in rearelevation.

As herein shown, the outer end of the box A is externallythreaded toadapt it to receive an externally-threaded extension-nut F, having itsouter face provided with a recess G, which receives the flanged innerend H of the nipple-nut I, screwed upon the outer end of the axle-arm J,which is oppositely threaded from the outer end of the box. The saidextensionnut is held in place upon the box solely by the frictionbetween its threads and those of the same, and therefore must be fittedVery tight, so that when it is adjusted upon the box considerabletwisting strain is thrown thereupon. The ordinary axle-box is notadapted to meet this strain, for which some adequate provision must bemade. I have provided for it by forming in the inner or larger end ofthe box a circular series of external corrugations B, placed side byside parallel with the length of the box, and each beveled at itsforward end, as at C, and there merging into a narrow centering-shoulderD, the diameter whereof is less by the depth of two corrugations thanthe diameter of the corrugated part of the box. The ordinaryretaining-ears E E are located directly in front of this shoulder. Ifdesired, they may be left off.

To set my improved axle-box into a hub, it is slipped into the bore ofthe same and centered therein by its centering-shoulder and then drivenhome to embed the corrugations in the wood, into which an easy start ismade by the beveled surfaces at the forward ends of the corrugations,which hold the box in the hub and prevent its turning therein under theseverest twisting strain which may be imposed upon it by the adjustmentof the friction-tight extension-nut.

Having fully described my invention,what I claim as new, and desire tosecure by Letters Patent, is

The combination, with an axle-box having its outer end exteriorlythreaded and its extreme inner end provided with outwardlyprojectingretaining-points, of a friction-tight extension-nut mounted upon itsouter end for adjustment thereon to vary its virtual length, the saidretaining-points sinking into the hub and firmly holding the box againstturning therein under the severe twisting strain imposed upon the box byturning its frictiontight nut, substantially as set forth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

BENJAMIN TYLER HENRY.

WVitnesses:

CHAS. B. SHUMWAY, WM. J. DE MAuRIAo.

